sql - Using EXCEPT operator on MySql 5.1 version -
sql - Using EXCEPT operator on MySql 5.1 version -
i have 5.1 mysql version on server. trying perform query:
select file_name words_db word_name=" . $element . " except select file_name files_db display=0
i getting error:
error: have error in sql syntax; check manual corresponds mysql server version right syntax utilize near 'except select file_name files_db display=0' @ line 4
can tell me how can perform query in alternative form?
thank you, max.
as far know mysql not back upwards theexcept
operator. seek instead:
select file_name words_db word_name=" . $element . " , file_name not in ( select file_name files_db display=0 )
you utilize either correlatednot exists
or aleft join
. don't utilize mysql much can't performs best.
mysql sql
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